Abstract
We use various data sets, including images from the High Resolution Imaging Science Experiment camera (HiRISE), to examine the ejecta of the generally fresh-looking Hale crater that occurs in the rugged mountain terrain of Nereidum Montes in the northern rim materials of the Argyre impact structure on Mars. Our investigation reveals that the distal parts of the Hale crater ejecta and other basin deposits behave like viscous flows, which we attribute to the secondary flow of ejecta mixed with water-ice-rich basin materials. Consistent with water-enrichment of the basin materials, our mapping further reveals occasionally deformed surfaces, including highly conspicuous features such as mounds and fractured plateaus that we interpret to be a result of periglacial modification, subsequent (including possibly present-day) to the transient localized melting and fluvial erosion caused by Hale-impact-generated heating. In particular, our morphometric analysis of a well-defined valley system west of Hale crater suggests that it may have been formed through hydrologic/glacial activity prior to the Hale impact, with additional modification resulting from the impact and subsequent geologic and hydrologic phenomena including glacial and periglacial activity.
| Original language | English |
|---|---|
| Pages (from-to) | 905-922 |
| Number of pages | 18 |
| Journal | Icarus |
| Volume | 226 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Sep 2013 |
| Externally published | Yes |
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Keywords
- Geological processes
- Impact processes
- Mars, Surface
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics
Cite this
Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars : Results from high resolution mapping. / El-Maarry, M. R.; Dohm, J. M.; Michael, G.; Thomas, N.; Maruyama, S.
In: Icarus, Vol. 226, No. 1, 09.2013, p. 905-922.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars
T2 - Results from high resolution mapping
AU - El-Maarry, M. R.
AU - Dohm, J. M.
AU - Michael, G.
AU - Thomas, N.
AU - Maruyama, S.
PY - 2013/9
Y1 - 2013/9
N2 - We use various data sets, including images from the High Resolution Imaging Science Experiment camera (HiRISE), to examine the ejecta of the generally fresh-looking Hale crater that occurs in the rugged mountain terrain of Nereidum Montes in the northern rim materials of the Argyre impact structure on Mars. Our investigation reveals that the distal parts of the Hale crater ejecta and other basin deposits behave like viscous flows, which we attribute to the secondary flow of ejecta mixed with water-ice-rich basin materials. Consistent with water-enrichment of the basin materials, our mapping further reveals occasionally deformed surfaces, including highly conspicuous features such as mounds and fractured plateaus that we interpret to be a result of periglacial modification, subsequent (including possibly present-day) to the transient localized melting and fluvial erosion caused by Hale-impact-generated heating. In particular, our morphometric analysis of a well-defined valley system west of Hale crater suggests that it may have been formed through hydrologic/glacial activity prior to the Hale impact, with additional modification resulting from the impact and subsequent geologic and hydrologic phenomena including glacial and periglacial activity.
AB - We use various data sets, including images from the High Resolution Imaging Science Experiment camera (HiRISE), to examine the ejecta of the generally fresh-looking Hale crater that occurs in the rugged mountain terrain of Nereidum Montes in the northern rim materials of the Argyre impact structure on Mars. Our investigation reveals that the distal parts of the Hale crater ejecta and other basin deposits behave like viscous flows, which we attribute to the secondary flow of ejecta mixed with water-ice-rich basin materials. Consistent with water-enrichment of the basin materials, our mapping further reveals occasionally deformed surfaces, including highly conspicuous features such as mounds and fractured plateaus that we interpret to be a result of periglacial modification, subsequent (including possibly present-day) to the transient localized melting and fluvial erosion caused by Hale-impact-generated heating. In particular, our morphometric analysis of a well-defined valley system west of Hale crater suggests that it may have been formed through hydrologic/glacial activity prior to the Hale impact, with additional modification resulting from the impact and subsequent geologic and hydrologic phenomena including glacial and periglacial activity.
KW - Geological processes
KW - Impact processes
KW - Mars, Surface
UR - http://www.scopus.com/inward/record.url?scp=84881224776&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881224776&partnerID=8YFLogxK
U2 - 10.1016/j.icarus.2013.07.014
DO - 10.1016/j.icarus.2013.07.014
M3 - Article
AN - SCOPUS:84881224776
VL - 226
SP - 905
EP - 922
JO - Icarus
JF - Icarus
SN - 0019-1035
IS - 1
ER -